Ssg tweaks. Better handling of missing tiles.

[flightgear.git] / README.autoconf

diff --git a/README.autoconf b/README.autoconf
index b937e5cf5a9757444db1d94af6cd4f2060c94954..6f30c54106851807267e7f403dfe889d12dde2a2 100644 (file)
--- a/README.autoconf
+++ b/README.autoconf
@@ -11,12 +11,14 @@ install the following packages:
 
     - GNU autoconf 2.12 (available from ftp://prep.ai.mit.edu/pub/gnu)
     - GNU automake 1.2h (available from ftp://ftp.cygnus.com/pub/tromey)
+
+Libtool is not currently used:
+
     - GNU libtool 1.2   (available from ftp://prep.ai.mit.edu/pub/gnu)
                         (or maybe ftp://alpha.gnu.org/gnu)
+    - After upgrading libtool, if we were using it, you would want to run:
 
-After upgrading libtool, you will want to run:
-
-    libtoolize --force
+      libtoolize --force
 
 When making a change to any of these files you will need to run:
 
@@ -28,5 +30,14 @@ Then follow the regular build procedure:
 
 For debuging purposes you might want to try something like:
 
-    CFLAGS=-Wall CXXFLAGS=-Wall ./configure --disable-shared; make; make install
+    CFLAGS=-Wall CXXFLAGS=-Wall ./configure; make; make install
+
+For full optimization using the EGCS compiler on an Intel processor you 
+could try something like:
+
+    MACH="-mpentium"   # -m486 -mpentiumpro etc.
+    export CC=egcc     # for Linux
+    export CFLAGS="-Wall -O5 -fomit-frame-pointer -ffast-math -funroll-loops $MACH"
+    export CXXFLAGS="-Wall -O5 -fomit-frame-pointer -ffast-math -funroll-loops $MACH"
+    ./configure